Pre-Operation
1. Check Voltage and Phase compared to the voltage and
phase information stamped on the pump name plate.
2. Plug cord into an 230 volt receptacle with ground fault
circuit interrupter (GFCI) (single phase).
3. Check Pump Rotation - Improper motor rotation can
result in poor pump performance and can damage
the motor and/or pump. Check rotation by momen-
tarily applying power and observe the "kickback".
Kickback should always be in a counter-clockwise
direction as viewed from motor end or opposite to
impeller rotation. Incorrect rotation for Single-Phase
pumps is unlikely. If the rotation is incorrect contact
factory.
4. Name Plate - Record the information from the pump
name plate for future reference.
5. Pump-Down Test - Lower pump into basin or sump and
plug into power receptacle, Check the system by
filling with liquid and allowing the pump to operate
through its pumping cycle. The time needed to
empty the system, or pump-down time along with the
volume of water, should be recorded.
Maintenance
Minimal maintenance is required. Perform the following
checks when pump is removed from operation or when
pump performance deteriorates:
a). Inspect motor chambers for oil level and
contamination.
b). Inspect impeller and body for excessive build-up or
clogging.
c). Inspect motor and bearings.
d). Inspect seal for wear or leakage.
e). Inspect cutters for wear
Servicing
NOTE: Item numbers in ( ) refer to part numbers shown
on page 14 and 15.
Cooling Oil - Anytime a pump is removed from operation,
the cooling oil in the motor housing should be checked
visually for oil level and contamination. Remove pipe
plug (42) from the housing (41). With a flashlight, visually
inspect the oil in the housing (41) to ensure it is clean and
clear, light amber in color, and free and clear of sus-
pended particles. Milky white oil indicates the presence
of water. The oil level should be just above the motor (20)
(2.1 L.) when the pump in standing in a vertical position.
Oil Testing
• Drain oil into a clean, dry container by placing the pump
onto its side. Remove pipe plug (42) from housing (41).
• Check oil for contamination using an oil tester with a
range to 30 Kilovolts breakdown.
• If oil is found to be clean and uncontaminated
(measuring above 15 KV. breakdown), refill the housing.
• If oil is found to be dirty or contaminated (or measures
below 15 KV. breakdown), the pump must be carefully
inspected for leaks at the shaft seal, cable assembly,
o- ring and pipe plug, before refilling with oil.
To locate the leak, perform the following pressure tests.
After leak is repaired, dispose of old oil properly, and refill
with new oil.
Grinder Pumps
Model: AGPR Series
Installation and Service
10 psi Air
Pressure
Gauge
Assembly
Check Here
Check Here
1
Pressure builds up extremely fast, increase
pressure by "TAPPING" air nozzle. Too much
pressure will damage seal.
DO NOT exceed 10 P.S.I.
Motor Housing Pressure Test:
If oil has been drained, fill the oil to the normal level in
the housing (41) before performing pressure test (See
Check Here
figure 3). Remove pipe plug (42) from housing (41).
PRESSURE
GAUGE
ASSEMBLY
Check Here
Figure 3
7
CHECK HERE
PRESSURE GAUGE
ASSEMBLY LOCATION
10 PSI
AIR
2
CHECK
HERE
CHECK
HERE